JP2004018094A - Transporting tray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a liquid crystal panel with a tape carrier package (TCP) from easily coming off from a transporting tray by a vibration or a shock during transportation. <P>SOLUTION: A transporting tray 11 is formed of a recess for storing a liquid crystal panel 3 with a TCP. A corner regulating part 7 which contacts, for positional regulation, the side face of the liquid crystal panel 1 in the neighborhood of a corner formed by the TCP 2 superimposing on the terminal end face of the panel 1 is formed in the recess for storage. The curved surface of the part 7 is structured in a two-stage fillet, and by setting the lower side radius of the curved face smaller, the contact face between the flat face part of the part 7 and the side face of the panel 1 becomes bigger. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device, an OA (Office Automation) terminal, and a transport tray for display elements and electronic components used for advertisement display and the like.
[0002]
[Prior art]
Conventionally, a transport tray has been used to transport display elements, electronic components, and the like. When the manufactured display elements and the like are transported for shipment, an operation of placing the display elements and the like in a transport tray, stacking the transport trays in multiple stages, and enclosing them in, for example, a cardboard case is performed. As described above, by storing the display elements and the like in the transfer tray and transferring them, damage to the display elements and the like during the transfer can be avoided as much as possible.
[0003]
As such a conventional transport tray, for example, a molded product made of a material such as a polyethylene resin or a polystyrene resin by a vacuum molding die is generally known. For example, Japanese Unexamined Patent Application Publication No. Hei 8-324677 discloses a transfer device for mounting a rectangular plate-shaped body such as a liquid crystal panel 1 having a rectangular main surface and a specific area such as a display area, as shown in FIGS. Tray 11 is disclosed.
[0004]
The transport tray 11 includes a plurality of corner regulating portions 7 that contact the side surfaces of the corner portions to regulate the liquid crystal panel 1, and a side regulating portion that contacts one side surface of the liquid crystal panel 1 to regulate the position of the liquid crystal panel 1. 8 and a receiving portion 9 for receiving and holding the liquid crystal panel 1 from the back surface side or the main surface side. The receiving portion 9 is disposed so as to receive a portion other than the specific area when the receiving portion 9 is viewed in a plan view. A liquid crystal panel with TCP 3 (see FIG. 8) on which a carrier package (hereinafter referred to as TCP) 2 is mounted, and a liquid crystal panel 5 with a printed circuit board on which a printed circuit board 4 is mounted (see FIG. 10) can be transported. .
[0005]
[Problems to be solved by the invention]
However, in the above publication, as shown in FIGS. 8 and 9, a structure that holds the liquid crystal panel 1 and does not directly apply a stress such as an impact to the TCP 2 and the printed board 4 is required. A sufficient distance (D in FIG. 9) from the end face to TCP2 is required.
[0006]
If the distance is short, the corner regulating portion 7 comes into contact with the TCP 2 and the printed circuit board 4, and vibrations and shocks at the time of transport are directly applied to the TCP 2 and the printed circuit board 4, and the liquid crystal panel 1 and the TCP 2 or the TCP 2 and the printed circuit board 4 are printed. A stress is applied to the connection portion of the substrate 4 and the connection portion is damaged.
[0007]
As shown in FIG. 10, a storage portion of the liquid crystal panel with TCP 3 is provided as a recess in the transport tray 11, and in this storage portion, the liquid crystal is formed in the vicinity of a corner portion where the TCP 2 overlaps the terminal end surface of the liquid crystal panel 1. A corner restricting portion 7 is provided which contacts the side surface of the panel 1 to regulate the position.
[0008]
In this case, as shown in the enlarged perspective view of the corner restricting portion 7 in FIG. 11, the edge of the ridge line has a curved shape due to restrictions on the production of the mold, and the contact area is small.
[0009]
Therefore, it is necessary to finely cut the vacuum mold that forms the corner regulating portion 7 on the transport tray 11 with a small-diameter drill. However, when a small-diameter drill is cut with a small radius of curvature, there is a problem that the drill itself is chipped or broken, and die machining cannot be practically performed. For example, when a small-diameter drill of 1.0 mmΦ is used to cut a curved surface with a radius of 0.5 mmR over a depth of about 7 mm, the tip is shaken and cannot be cut well.
[0010]
Therefore, the radius of the curved surface of the corner restricting portion 7 must be set to be somewhat large. In this case, the contact area between the side surface of the corner regulating portion 7 and the end surface of the terminal portion of the liquid crystal panel 1 is extremely reduced, and the force with which the transport panel 11 holds the liquid crystal panel 1 is reduced. As a result, the liquid crystal panel 1 easily floats from the storage portion of the transport tray 11, and the liquid crystal panel 1 jumps out of the storage portion of the transport tray 11 or rides on the surface of the transport tray 11 due to vibration or impact during transport. In addition, the liquid crystal panel 1 may be damaged.
[0011]
An object of the present invention is to solve such a problem, and an object of the present invention is to prevent the liquid crystal panel with TCP 3 and the liquid crystal panel with a printed circuit board from being easily detached from the transport tray 11 due to vibration or impact during transport.
[0012]
[Means for Solving the Problems]
The transport trays 11 are stacked and transported in multiple stages. At this time, if the liquid crystal panel 1 hits the transport tray 11 in the immediately upper stage, the liquid crystal panel 1 is liable to be damaged. Therefore, the corner regulating portion 7 is set to a certain depth to make a space above the liquid crystal panel 1. .
[0013]
Therefore, in a portion above the upper surface of the liquid crystal panel 1 placed on the receiving portion 9, the side surface of the corner regulating portion 7 is not in contact with the terminal end surface of the liquid crystal panel 1, which contributes to the holding of the liquid crystal panel 1. Absent. What contributes to the holding is a portion from the level of the receiving portion 9 to a certain height, specifically, to the height of the terminal portion end face of the liquid crystal panel 1 supported by the receiving portion 9.
[0014]
Therefore, the inner surface of the curved surface of the corner regulating portion 7 is finished in a two-stage fillet structure, and the radius of the lower curved surface is set smaller than that of the upper stage to increase the area where the corner regulating portion 7 contacts the liquid crystal panel 1. This eliminates the need for precision and depth in the fine cutting of the transfer tray forming die, and eliminates the risk of chipping or breakage of the cutting drill.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which the liquid crystal panel with TCP 3 is taken out from the transport tray 11 right above. The TCP 2 is connected (fixed) at one end to a terminal portion of the liquid crystal panel 1, and is provided horizontally outside the liquid crystal panel 1.
[0016]
The TCP 2 is arranged in a direction orthogonal to the terminal end face of the liquid crystal panel 1. In view of this, a corner regulating portion 7 that regulates the position by contacting the side surface of the liquid crystal panel 1 near the corner formed by the TCP 2 overlapping the terminal end surface of the liquid crystal panel 1 is provided on the transport tray 11. As shown in FIG. 1, the transport tray 11 holds the TCP-equipped liquid crystal panel 3 in which the TCP 2 is mounted on the liquid crystal panel 1 by the receiving part 9 and the corner regulating part 7.
[0017]
FIG. 2 is an enlarged perspective view around the corner regulating portion 7 of the transport tray 11. As shown in FIG. 2, the inner surface of the corner regulating portion 7 is finished to a curved surface. Here, the lower slope is referred to as a lower slope 7b, and the upper slope is referred to as an upper slope 7a. As described above, the inner surface of the corner regulating portion 7 has a two-stage fillet structure including the lower slope portion 7b and the upper slope portion 7a.
[0018]
The fillet structure refers to a shape in which a ridge connecting two surfaces is processed into a curved surface. The upper end of the upper slope 7a has a curved surface radius of 1 mmR, and the lower end of the lower slope 7b has a curved radius of 0.5 mmR. These numerical values are examples and are not limited.
[0019]
The production of the molding die is performed by first performing a cutting process of 0.5 mmR, followed by a cutting process of 1 mmR, and the cutting process is performed with a gradient of 5 °. This numerical value is an example, and there is no limitation, since processing may be performed without giving a gradient. On this mold, the thermoplastic plastic sheet is heated and softened to have a shape capable of storing the stored items, and while soft, an external force (vacuum, compressed air, or the like) is applied to the sheet, and then the sheet is cooled and solidified. . In the prototype of the transport tray 11 thus obtained, a step 7c (see FIGS. 3 and 4) due to the shape of the mold 12 (see FIG. 4) is formed in the corner regulating portion 7. The step becomes smooth as shown in FIG.
[0020]
As shown in the plan view of FIG. 5 and the cross-sectional view of FIG. 7, the transport tray 11 manufactured as described above is configured such that the liquid crystal panel 1 is placed on the receiving portion 9 thereof. In the recess. At this time, the upper surface of the liquid crystal panel 1 substantially coincides with the height of the boundary between the lower slope portion 7b and the upper slope portion 7a as shown in the enlarged sectional view of FIG. Therefore, the liquid crystal panel 1 is not positioned above the height at which the lower slope portion 7b is formed.
[0021]
As shown in the enlarged plan view of FIG. 6, the lower slope portion 7b has a smaller curved surface than the upper slope portion 7a and has a wider flat portion, so that the side surface of the corner regulation portion 7 and the terminal end surface of the liquid crystal panel 1 are provided. Large contact area. Thereby, the holding force of the liquid crystal panel 1 is further improved. Accordingly, it is possible to prevent the liquid crystal panel with TCP 3 from climbing on the transport tray 11 or falling off due to vibration or impact during transport, and to prevent the liquid crystal panel 1 from being damaged.
[0022]
Further, since the distance D between the liquid crystal panel 1 and the TCP 2 in FIG. 6 can be reduced, the present invention is particularly applied to the liquid crystal panel 1 in which the panel itself is small and the display effective area is large as in recent years. It is valid.
[0023]
【The invention's effect】
As described above, according to the present invention, it is possible to increase the contact area between the side surface of the corner regulating portion of the transport tray that regulates the position of the display body (liquid crystal panel) to be stored and the outer shape of the display body. It is possible to improve the holding force against vibration and impact at the time, and reduce the breakage rate of the display body.
[0024]
In addition, by using a two-stage fillet structure for the corner regulating portion, it is possible to avoid problems such as chipping or breakage of a small-diameter drill to be cut in die machining of the transfer tray, and to improve die workability. .
[Brief description of the drawings]
FIG. 1 is a perspective view when a liquid crystal panel with TCP is placed on a transport tray of the present invention.
FIG. 2 is an enlarged view of a portion surrounded by a circle in FIG.
FIG. 3 is a perspective view of a prototype of a transfer tray, showing a portion corresponding to FIG. 2 in an enlarged manner.
FIG. 4 is a sectional view of a prototype of a transfer tray and a step of the tray, and shows a cross section of a portion corresponding to FIGS. 2 and 3;
FIG. 5 is a plan view of a transport tray on which a liquid crystal panel with TCP is mounted.
FIG. 6 is an enlarged view of a portion surrounded by a circle in FIG. 4;
FIG. 7 is a cross-sectional view of a transport tray on which a liquid crystal panel with a TCP is placed.
FIG. 8 is an enlarged view of a portion surrounded by a circle in FIG. 7;
FIG. 9 is a perspective view of a conventional transport tray on which a liquid crystal panel with TCP is mounted.
FIG. 10 is a perspective view of a transport tray on which a liquid crystal panel with a printed board is placed.
FIG. 11 is a perspective view when a liquid crystal panel with a TCP is placed on a conventional transport tray.
FIG. 12 is an enlarged view of a portion surrounded by a circle in FIG. 11;
[Explanation of symbols]
1 liquid crystal panel (rectangular plate)
2 Tape carrier package (attachment)
3 Liquid crystal panel with TCP 7 Corner regulating section 8 Side regulating section 7a Upper slope section 7b Lower slope section 9 Receiving section 11 Transport tray 12 Mold

Claims (2)

In a transport tray for accommodating and transporting a display body with a tape carrier package formed by connecting a tape carrier package to a terminal end face of the display body in a recess, the tape carrier package may overlap with a terminal end face of the display body. A corner regulating portion for regulating the position by contacting the side surface of the display body in the vicinity of the corner is provided, and the ridge line of the corner regulating portion is formed into a curved surface, and the radius of the curved surface is set below the depth direction of the corner regulating portion. A transport tray characterized in that different dimensions are set so that the side is smaller and the upper side is larger. In a transport tray for accommodating and transporting a display body with a tape carrier package formed by connecting a tape carrier package to a terminal end face of the display body in a recess, the tape carrier package may overlap with a terminal end face of the display body. A corner regulating portion for regulating the position by contacting the side surface of the display body near the corner is provided, and the ridge line of the corner regulating portion has a predetermined height from the height of the receiving portion supporting the display body in the recess. A transport tray characterized in that it is processed into a curved surface having a two-stage fillet structure so that the curved surface radius of a portion is smaller than the curved surface radius of a portion above it.

Images